Prepare the Croissants and Berries

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Prepare Baking Dish: Grease a 9×13-inch baking dish with butter or non-stick spray.
3. Arrange Croissants: Place the croissant chunks evenly in the prepared baking dish.
4. Add Berries: Scatter the mixed berries over the croissant chunks.

Make the Custard Mixture

1. Whisk Eggs: In a large mixing bowl, whisk together the eggs until well beaten.
2. Add Milk and Sugar: Pour in the milk and add the granulated sugar, whisking until combined.
3. Add Flavorings: Stir in the vanilla extract and almond extract (if using).

Combine and Soak

1. Pour Custard Over Croissants: Pour the custard mixture evenly over the croissants and berries.
2. Press Down Gently: Press the croissants down gently with a spatula to ensure they soak up the mixture.
3. Let Soak: Allow the mixture to soak for at least 15 minutes. For best results, cover and refrigerate for up to 8 hours or overnight.

Bake the Croissant Bake

1. Bake in Oven: Place the baking dish in the preheated oven and bake for 40-45 minutes, or until the top is golden brown and the custard is set.
2. Cool Slightly: Remove from the oven and let it cool for a few minutes before serving.

Serve

1. Dust with Powdered Sugar: Dust the top with powdered sugar before serving.
2. Serve Warm: Cut into squares and serve warm, drizzled with maple syrup.